<template>
	<view>
    <view class="search-box">
      <!-- 自定义搜索组件 -->
      <my-search @click="gotoSearch"></my-search>
    </view>
    
    <!-- 轮播图区域 -->
    <swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" :circular="true">
      <swiper-item v-for="(item, i) in swiperList" :key="i">
        <navigator class="swiper-item" :url="'/subpackage/goods_detail/goods_detail?id=' + item.goods_id">
          <image :src="item.image_src"></image>
        </navigator>
      </swiper-item>
    </swiper>
    
    <!-- 分类导航区域 -->
    <view class="nav-list">
      <view v-for="(item, i) in navList" :key="i" @click="navClickHandler(item)" class="nav-item">
        <image :src="item.image_src" class="nav-image"></image>
      </view>
    </view>
    
    <!-- 楼层区域 -->
    <view class="floor-list">
      <!-- 每一个楼层的 item 项 -->
      <view class="floor-item" v-for="(item, i) in floorList" :key="i">
        <!-- 楼层标题 -->
        <image :src="item.floor_title.image_src" class="floor-title"></image>
        <!-- 楼层的图片区域 -->
        <view class="floor-img-box">
          <!-- 左侧大图片的盒子 -->
          <navigator class="left-img-box" :url="item.product_list[0].url">
            <image :src="item.product_list[0].image_src" :style="'width: ' + item.product_list[0].image_width + 'rpx'" mode="widthFix"></image>
          </navigator>
          <!-- 右侧4个小图片的盒子 -->
          <view class="right-img-box">
            <navigator v-for="(item2, i2) in item.product_list" :key="i2" v-if="i2 !== 0" class="right-img-item" :url="item2.url">
              <image :src="item2.image_src" :style="{width: item2.image_width + 'rpx'}" mode="widthFix"></image>
            </navigator>
          </view>
        </view>
      </view>
    </view>
	</view>
</template>

<script>
  // 导入封装的 tabbar-badge.js Mix模块
  import badgeMix from '@/mixins/tabbar-badge.js'
  
	export default {
    mixins: [badgeMix],
		data() {
			return {
				// 这是轮播图数据列表
        swiperList: [],
        // 这是分类导航数据
        navList: [],
        // 楼层数据列表
        floorList: []
			};
		},
    // 监听页面加载
    onLoad() {
      // 获取轮播图数据
      this.getSwiperList()
      // 获取分类导航数据
      this.getNavList()
      // 获取楼层数据
      this.getFloorList()
    },
    methods: {
      async getSwiperList() {
        const {data: res} = await uni.$http.get('/api/public/v1/home/swiperdata')
        if (res.meta.status !== 200) return uni.$showMsg()
        this.swiperList = res.message
      },
      async getNavList() {
        const {data: res} = await uni.$http.get('/api/public/v1/home/catitems')
        if(res.meta.status !== 200) return uni.$showMsg()
        this.navList = res.message
      },
      // nav-item 项被点击时的事件处理函数
      navClickHandler(item) {
        // 当点击分类导航选项时跳转到分类对应的tabBar页面
        if (item.name === '分类') {
          uni.switchTab({
            url: '/pages/cate/cate'
          })
        }
      },
      // 定义获取楼层数据的方法
      async getFloorList() {
        const {data: res} = await uni.$http.get('/api/public/v1/home/floordata')
        if (res.meta.status !== 200) return uni.$showMsg()
        // 对数据进行处理
        res.message.forEach(floor => {
          floor.product_list.forEach(prod => {
            prod.url = '/subpackage/goods_list/goods_list?' + prod.navigator_url.split('?')[1]
          })
        })
        this.floorList = res.message
      },
      gotoSearch() {
        uni.navigateTo({
          url: '/subpackage/search/search'
        })
      }
    }
	}
</script>

<style lang="scss">
  swiper {
    height: 330rpx;
    .swiper-item,
    image {
      width: 100%;
      height: 100%;
    }
  }
  
  .nav-list {
    display: flex;
    justify-content: space-around;
    margin: 15px 0;
    .nav-image {
      width: 128rpx;
      height: 140rpx;
    }
  }
  
  .floor-title {
    display: flex;
    width: 100%;
    height: 60rpx;
  }
  .floor-img-box {
    display: flex;
    padding-left: 10rpx;
  }
  .right-img-box {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-around;
  }
  
  .search-box {
    // 设置定位为吸顶效果
    position: sticky;
    // 吸顶的位置
    top: 0;
    //提高吸顶的层级，防止被轮播图覆盖
    z-index: 999;
  } 
</style>
